| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a virtual router which can prevent cost increase when VPN is constructed plurally. SOLUTION: The virtual router is provided with an input interface for receiving an input IP packet, an IP router for routing the IP packet which the input interface received, and an output interface for outputting the input IP packet subjected to routing by the IP router. The input interface is provided with a plurality of logic input interfaces for every private network identification number. The IP router is provided with a virtual router for every private network identification number, and a routing table for every private network identification number. The output interface part is provided with a logic output interface for every private network identification number.</p> |
